96252054f89940acbe66f2b6c1ffc808bcc484f9be9460314e2cb8e06b64b972

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 20:52

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General

Target

2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe
Size

32KB
MD5

da9602af25d32224f78c043b91928b59
SHA1

943d15719d2b6e58377ae238eb7fe978197cc1f5
SHA256

96252054f89940acbe66f2b6c1ffc808bcc484f9be9460314e2cb8e06b64b972
SHA512

84604cac26d70a81562549a2f2e03a96640484d4999b6a367bae047a23ebf7a54ade29f530d8a90f3c838a8aa97430529835dcbd55d9fb0b1e7924c56f16551a
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9RXmi3E0:b7o/2n1TCraU6GD1a4Xt9RLE0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fd-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1888	rewok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 1888	3996	2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe	87
PID 3996 wrote to memory of 1888	3996	2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe	87
PID 3996 wrote to memory of 1888	3996	2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_da9602af25d32224f78c043b91928b59_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
32KB

MD5
62b98350a72cc031c903cacdd16c5b0d

SHA1
8f1025e0cfc2bee5af61e586c784ede1d807a511

SHA256
5cd3dd9780da279518231d243ba836c983a4f64a37c11550a4a2d531d87352da

SHA512
b989ed1f60c5d43ad7de314b7c726a64a8e1f10b4698c05771b43e3d6768f6ba7779327f08318bf67d2287992656083ba3703520247b220a7ef16102c82a87c5

Download Submit
memory/1888-21-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3996-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3996-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3996-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download